The phrase "much bass" means there is a lot of low-pitched sound in music or audio. It refers to the deep, rumbling tones that can be heard, particularly in songs with heavy beats.
Sentences with «much bass»
There is not much bass with this setup, which is why there is a subwoofer on the back of the TV. (digitaltrends.com)
As with a lot of other notebooks, there's not as much bass as I'd like, and audio can sound a bit flat at times. (laptopmag.com)
That they're able to produce so much bass, and that they manage to stay still as well as they do, is impressive given that design. (businessinsider.com)